To go dogging in Mcdonald's drive thru and having the staff there watch you before making your order as normal and then finishing off in front of window 3 before taking your food and having post sex munchies.

Niki: Steve let's go Mcdogging!!
Steve: Yeah ok sounds great, What we gonna eat though?
Niki: erm we will have a quick break and check the menu out on our way through :)
Steve: Ok :D sounds great, cant wait!